Question

In a test Freya scores 25% more marks than Eva. Eva scores 50% more marks than Dominic. In total the three children score 140 marks. The test if out of 80. What percentage does Dominic score in the test?​

Answer 1

Freya = 5/4 Eva
Eva = 3/2 Dominic
So, if Dominic scored d points, then
d + 3/2 d + 5/4 * 3/2 d = 140
35/8 d = 140
d = 32
32/80 = 2/5 = 40%